參數(shù)資料
型號: HEF4521BP
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: 24-stage frequency divider and oscillator
封裝: HEF4521BP<SOT38-4 (DIP16)|<<http://www.nxp.com/packages/SOT38-4.html<1<Always Pb-free,;HEF4521BT<SOT109-1 (SO16)|<<http://www.nxp.com/packages/SOT109-1.html<1<week
文件頁數(shù): 12/17頁
文件大?。?/td> 106K
代理商: HEF4521BP
HEF4521B_5
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 5 November 2009
12 of 17
NXP Semiconductors
HEF4521B
24-stage frequency divider and oscillator
g
fs
= d
io
/d
vi
with v
o
constant (see
Figure 11
).
(1) Average + 2 s.
(2) Average.
(3) Average
2 s, where ‘s’ is the observed standard
deviation.
Fig 10. Test setup for measuring forward
transconductance
Fig 11. Typical forward transconductance g
fs
as a
function of the supply voltage at T
amb
= 25
°
C
001aae820
input
output
A2
Y2
V
DD
V
SS
Rbias
560 k
0.47
μ
F
100
μ
F
io
V
i
(f = 1 kHz)
A
001aae658
V
DD
(V)
0
15
10
5
5
7.5
2.5
10
12.5
g
fs
(mA/V)
0
(3)
(2)
(1)
Fig 12. Voltage gain V
O
/V
I
as a function of supply
voltage
Fig 13. Supply current as a function of supply voltage
Fig 14. Test setup for measuring the
Figure 12
and
Figure 13
graphs
V
DD
(V)
0
15
10
5
001aae716
25
50
75
gain
(V
O
/V
I
)
0
typ
001aae717
V
DD
(V)
0
15
10
5
10
5
15
20
I
DD
(mA)
0
typ
001aae718
A2
330 k
Y2
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